Magnetization Process of Stadium-Shaped Magnetic Tunnel Junction Cells for Artificial Spin Ice

被引:4
|
作者
Kubota, Hitoshi [1 ]
Tsunegi, Sumito [1 ]
Yakushiji, Kay [1 ]
Taniguchi, Tomohiro [1 ]
Tamaru, Shingo [1 ]
Yamamoto, Tatsuya [1 ]
Sugihara, Atsushi [1 ]
Matsuura, Ryo [2 ]
Nomura, Hikaru [2 ,3 ,4 ]
Suzuki, Yoshishige [1 ,2 ,3 ]
机构
[1] Natl Inst Ind Sci & Technol AIST, Tsukuba, Ibaraki 3058568, Japan
[2] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan
[3] Osaka Univ, Grad Sch Engn Sci, Ctr Spintron Res Network CSRN, Toyonaka, Osaka 5600043, Japan
[4] Tohoku Univ, SRIS, Sendai, Miyagi 9808577, Japan
关键词
Artificial spin ice (ASI); magnetization process; stadium shape; tunneling magnetoresistance (MR); EXCHANGE STIFFNESS;
D O I
10.1109/TMAG.2023.3291380
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Artificial spin ice (ASI) consists of submicrometer-sized magnetic cells, which shows emergent behaviors of the magnetizations in the cells. To apply the magnetization dynamics of the ASI to spintronics devices, it is important to understand the magnetization process of the cells. In the ASI samples, stadium-shaped (SS) cells have been widely used. However, its magnetization process has not been well understood yet. In this study, we investigated the magnetization process of the SS cells by magnetoresistance (MR) measurement in magnetic tunnel junctions (MTJs) as well as micromagnetic simulation. It was found that the SS cells showed magnetization switching at a low field, which was triggered by the annihilation of the magnetic vortex.
引用
收藏
页数:4
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